Vishay Siliconix DG458DJ-E3

Overview

DG458DJ-E3 from Vishay Siliconix is a fault-protected, single-ended 8-channel analog multiplexer IC designed for high-reliability signal routing in harsh voltage environments. It features ±35 V continuous overvoltage tolerance with power off, 180 Ω typical on-resistance at ±5 V supplies, 200 ns transition time, and break-before-make switching. It serves as a rugged front-end switch in data acquisition systems interfacing sensors exposed to transients or supply loss.

For engineers reviewing the DG458DJ-E3 datasheet, DG458DJ-E3 pinout, DG458DJ-E3 application, or DG458DJ-E3 equivalent, key selection criteria include fault protection behavior under ±35 V overvoltage (with/without power), channel leakage <0.5 nA at ±10 V, TTL/CMOS-compatible digital control, and DIP-16 package compatibility with legacy HI-508A designs.

Technical Context

The DG458DJ-E3 implements a three-MOSFET series structure per channel (two n-channel + one p-channel) enabling intrinsic overvoltage cutoff when analog signals exceed supply rails - even during complete power loss. This architecture delivers true open-circuit fault behavior with sub-nanoamp leakage, unlike conventional transmission gates.

Its digital interface uses standard TTL thresholds (V_IL ≤ 0.8 V, V_IH ≥ 2.4 V), supports full ±18 V dual-supply operation, and guarantees break-before-make timing (t_OPEN = 45 ns min) to prevent channel crosstalk. All eight channels disable automatically when EN = low or supplies are absent.

Key Specifications

Pinout & Package

Package: 16-pin plastic DIP (Dual-In-Line), JEDEC MS-001, body width 7.62 mm, lead pitch 2.54 mm.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar analog multiplexer applications.

Compared with HI-508A and MAX358, the DG458DJ-E3 delivers superior fault resilience (±35 V with power off), lower on-resistance variation, and verified break-before-make timing - making it the only option qualified for safety-critical avionics and downhole telemetry where supply loss cannot compromise channel isolation.

Availability

DG458DJ-E3 is available at Aetrix Electronics and suitable for data acquisition systems, avionics test equipment, and high-reliability industrial process controllers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for DG458DJ-E3 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Vishay Siliconix is a global leader in discrete semiconductors and passive components, specializing in high-reliability, high-voltage, and fault-tolerant analog solutions for demanding industrial and aerospace applications.

The DG458DJ-E3 belongs to Vishay's fault-protected analog switch family, engineered specifically for signal integrity preservation in environments with unpredictable power states, high ESD stress, and wide analog voltage excursions.

FAQ

What is the maximum overvoltage the DG458DJ-E3 can withstand with power supplies disconnected?

The DG458DJ-E3 withstands continuous analog input overvoltages from −35 V to +35 V even when V+ and V− are unpowered. Under this condition, leakage remains below 2 nA per channel, preserving sensor integrity and preventing backfeed into adjacent circuitry. This capability is confirmed in the Absolute Maximum Ratings table and validated in Figure 1 of the DG458/DG459 datasheet (Document Number: 70064).

Does the DG458DJ-E3 require external pull-up or pull-down resistors on its digital control pins?

No, the DG458DJ-E3 does not require external biasing on A0, A1, A2, or EN. The EN pin has an internal pull-down; all address inputs are TTL/CMOS compatible with defined thresholds (V_IL ≤ 0.8 V, V_IH ≥ 2.4 V). External resistors are unnecessary unless noise immunity in high-EMI environments demands stronger drive - in which case 10 kΩ pull-downs on address lines are sufficient.

How does the DG458DJ-E3 achieve break-before-make switching, and is it guaranteed across temperature?

The DG458DJ-E3 guarantees break-before-make operation via internal decoder timing that forces all switches open for a minimum 45 ns interval (t_OPEN) during address transitions. This parameter is specified over the full −40 °C to +85 °C operating range and tested per Figure 4 in the datasheet. No external timing components or sequencing logic are needed to ensure channel isolation.

Can the DG458DJ-E3 operate with asymmetric supply voltages, such as +12 V and −5 V?

Yes, the DG458DJ-E3 supports asymmetric dual supplies as long as V+ − V− ≤ 44 V and each rail stays within its absolute limits: V+ to GND ≤ 22 V, V− to GND ≥ −25 V. For example, +12 V / −5 V (17 V total) is fully compliant and maintains R_DS(on) < 250 Ω and leakage < 1 nA - verified in the Specification tables under "Analog Signal Range" and "Drain-Source On-Resistance".

Is the DG458DJ-E3 RoHS-compliant and halogen-free?

Yes, the DG458DJ-E3 is RoHS-compliant per Directive 2011/65/EU and halogen-free per JEDEC JS709A. The "-E3" suffix explicitly denotes lead-free, RoHS-compliant termination with matte tin plating. Vishay confirms compliance in its Material Category Policy documentation (Document Number: 91000) and packaging drawings (Document Number: 71261).